New package: cinema_lib (#14231)

* Start cinema package

* Remove boilerplate and add description

* Formatting for pep8

* Correct milestone tag

* 'master' instead of 'develop'

Co-Authored-By: Adam J. Stewart <ajstewart426@gmail.com>

* Two variants, both with numpy and other small changes

* When +image for scikit

Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com>